This module hides the mouse cursor over the Orbiter window after two seconds of no movement, so you don't need to have a cursor floating around in space with you. The cursor is shown again as soon as the mouse is moved.
Original question was asked at http://www.orbiter-forum.com/showthread.php?t=15686.
Unzip to the main Orbiter directory while keeping the folder structure intact. Source code is included.